A201955 - cp's OEIS frontend

A201955 Number of zero-sum n X 2 -3..3 arrays with every element unequal to at most two horizontal and vertical neighbors.

n	a(n)
1	7
2	231
3	1587
4	17903
5	194633
6	2232183
7	25952953
8	305979795
9	3640250461
10	43624267941
11	525774918227
12	6366440653727
13	77388201173481
14	943784967491137
15	11542145313593503
16	141498452574240619
17	1738344524754583621

[7, 231, 1587, 17903, 194633, 2232183, 25952953, 305979795, 3640250461, 43624267941, 525774918227, 6366440653727, 77388201173481, 943784967491137, 11542145313593503, 141498452574240619, 1738344524754583621]

cp's OEIS Frontend

A201955 Number of zero-sum n X 2 -3..3 arrays with every element unequal to at most two horizontal and vertical neighbors.

Table of values

List of values